Thogus Nylon Tube & Hose Fitting, Adapter, White, 3/8" NPT Male x 3/4" GHT (Pack of 10) Adapter for connecting tubes or fittings of different types Male NPT threads for connecting to female threads on one end and garden hose threads on the other Nylon for strength, flexibility and crush resistance Working pressure of up to 150 psi Operating temperatures range from -50 to 275 degrees F